Archaeological Reserve “Thracian ancient city Kabyle” is situated 8 kilometers northwest of Yambol. In the historiography of Ancient Thrace unanimously and strongly is established the belief that Kabyle is an important political, economic and religious center, that arose at the end of the second and beginning of the first millennium BC. The sanctuary of the Great Mother Goddess Cybele located at Rabbit's peak is the consolidating factor for the emergence of a village at the foot of the peak. At the acropolis-sanctuary were discovered rock “relief of Cybele”, the foundations of a public building and two rectangular chambers most likely of cult character. Rabbit’s peak is located on the bend of the river Tundzha south towards Edirne (today Turkey) and dominates the plain. In all times Kabyle is a key point on the road from Aynos (today Enez) at the mouth of Maritsa (ancient Hebros) to Hemus (Stara Planina) and lower reaches of the river Danube and also on the diagonal route from Byzantium through Serdika (Sofia) - Naysos (Nish) towards the middle reaches of the river Danube. This location determines the destiny of the village for centuries on end.

Later historical sources associate Kabyle with the colonizing activity of the Macedonian ruler Philip II in connection with his campaigns in Thrace 342-341 year BC. The famous inscription in Seuthopolis present it as a city, arranged according to the Hellenic town planning rules and traditions. During the rule of the kings Spartok and Skostok at the beginning of the III century BC, Kabyle became the capital of the Odrysian state. Towards the middle of the III century BC the royal institution was replaced by urban management. In III-II century BC Kabyle is the only city of the interior of Thrace with its own coinage. During II-IV century BC the city carried out active trade relations with the entire Aegean world, not only as a traditional consumption center of imported produce, but as an equal participant in the trade. Kabyle was conquered by the Romans led by Marcus Lucullus in 72 BC. In 45 AD the city was finally incorporated into the Roman Empire as one of the main urban centers in the province of Thrace. From the II century AD the city became the second most important Roman military camp in the province of Thrace. From 136 AD to 192 AD Cohors II Lucensium, then Cohors I Atoitorum resided in Kabyle.

With the adoption of Christianity as the official religion in 313 Kabyle is one of the leading episcopal centers. A monumental three nave basilica with mosaic floors, reconstructed in the V century and a smaller basilica with a baptistery in the outline of a military camp are discovered and exposed. Subsequent centuries filled with barbarian invasions and dramatic events mark the end of the organized urban life in Kabyle. At the end of the VI century AD the city was finally destroyed by the Avars. During the XI - -XІV century AD on the ruins of an ancient city, a little medieval village existed.

A contemporary settlement was not built on the ancient city, which makes it easy for examination and convenient for exposure. It was declared a "national antiquity" back in 1927. It was also declared a cultural monument of national importance, national archaeological and architectural reserve and "Rabbit’s peak" is an environmentally protected area (State Gazette issue 24 of 1969; SG issue 67 of 1979; SG issue 14 of 1981). In 1972 regular archeological excavations were launched on the territory of the ancient city, as for now only 15% of the entire area were explored.

Today Kabyle fits very well into modern infrastructures. Trakia highway passes only 500 m south of the reserve and that provides good prospects for Kabyle as an archaeological site of national importance. Regional Historical Museum - Yambol manages Archaeological reserve "Thracian and antique town of Kabyle" and together they are under No. 99 of the 100 national tourist sites.  
The combination of natural scenery with a rich and multi-layered history offers a unique, emotional experience for visitors. After a sunny stroll through the ruins, after climbing to the top to touch the Mother Goddess and see Yambol field with the eyes of eagles, tourists can enter the cool exhibition hall to become acquainted with many more cultural treasures from antiquity. The exhibits are over 2000, as the collection is enriched after each archaeological summer. In past decades Kabyle has become a very good basis for training practices of the students in "Archaeology" at Sofia University "St. Kliment Ohridski ". There were a number of international scientific forums held at Kabyle - symposiums "Residential life in Thrace" in 1982, 1986, 1993, 2005; 2012; VIII World Congress of Thracology in 2000; International Symposium on amphorae and amphora epigraphy in 2007.